Park K <br/><br/>
Parks text book of preventive and social medicine 

 - 18 Ed. 
 - Jabalpur  Banarsidas bhanot  2005 
 - 711 
<br/><br/><label>ISBN: </label>8190128280 
<br/><br/><label>Dewey Class. No.: </label>614  / PAR/PR